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Home › Infiniti › 2006 › M45 › Repair and Diagnosis › Transmission › Automatic Transmission › DTC P1845 ATF Pressure Switch 5 › Diagnostic Procedure

Diagnostic Procedure

  1. CHECK INPUT SIGNAL 

    With CONSULT-II 

    1. Start engine.
    2. Select "ECU INPUT SIGNALS" or "MAIN SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
    3. Drive vehicle in the "D" position (1st => 2nd gear), and confirm the ON/OFF actuation of the "ATF PRES SW 5".
    ATF PRES SW5 CONDITION - DISPLAY VALUE

    Item name Condition Display value
    ATF PRES SW 5 Direct clutch engaged. Refer to .CLUTCH AND BAND CHART  ON
    Direct clutch disengaged. Refer to .CLUTCH AND BAND CHART  OFF
    Fig 1: CONSULT II Display - Data Monitor
    G04180696Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 4.

    NG: GO TO 2.

  2. CHECK TCM POWER SUPPLY AND GROUND CIRCUIT 

    Check TCM power supply and ground circuit. Refer to "MAIN POWER SUPPLY AND GROUND CIRCUIT ".

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace damaged parts.

  3. DETECT MALFUNCTIONING ITEM 

    Check the following.

    • The A/T assembly harness connector pin terminals for damage or loose connection with harness connector.

    OK or NG 

    OK: Replace the control valve with TCM. Refer to "CONTROL VALVE WITH TCM AND A/T FLUID TEMPERATURE SENSOR 2 ".

    NG: Repair or replace damaged parts.

  4. CHECK DTC 

    Perform "DTC Confirmation Procedure". Refer to "DTC CONFIRMATION PROCEDURE ".

    OK or NG 

    OK: INSPECTION END 

    NG: GO TO 2.

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